The short answer
For websites and apps, WebP is better than JPG in almost every case: same visual quality at roughly 25–35% smaller file sizes, plus transparency and animation that JPG cannot do. For email attachments, print, and sharing with non-technical people, JPG remains the safer choice because absolutely everything opens it.
What WebP actually is
WebP is an image format developed by Google (released in 2010) using the VP8 video codec's compression techniques. It supports both lossy compression (like JPG) and lossless compression (like PNG), along with transparency and even animation — making it a genuine all-rounder.
Real file-size savings
Independent tests and Google's own studies consistently show WebP lossy images are about 25–35% smaller than JPG at equivalent visual quality. On a photo-heavy website, that translates directly into faster page loads, lower bandwidth bills, and better Core Web Vitals scores — which is why Google's PageSpeed tools keep nagging site owners to "serve images in next-gen formats."
Try it yourself: convert any JPG with our free JPG to WebP converter and compare the file sizes side by side.
Quality: can you see the difference?
At matched file sizes, WebP generally looks slightly better than JPG, with fewer blocky artifacts in smooth gradients like skies. At matched quality settings, the files are simply smaller. Either way, for typical web use there is no visible downside — WebP is not a "cheap" format, it is a more modern codec doing a better job.
Transparency and animation: WebP's bonus round
JPG cannot do transparency or animation at all. WebP handles both: it supports an alpha channel like PNG (great for logos and overlays) and animated images that are far smaller than equivalent GIFs. If you are currently using PNG just for transparency, WebP lossless will usually cut that file down significantly too — try the PNG to WebP converter.
Browser support in 2026: a solved problem
WebP is now supported by every modern browser: Chrome, Edge, Firefox, Opera, and Safari (since version 14). Unless your audience is on truly ancient devices, you can serve WebP without fallbacks. This was WebP's biggest weakness for years — today it is a non-issue.
When to stick with JPG
- Email attachments: some email clients and corporate filters still handle JPG more gracefully.
- Print: print shops and desktop publishing tools expect JPG or TIFF, not WebP.
- Sharing with others: if the recipient might open it in old software, JPG is the universal language.
- Archiving originals: keep camera originals as JPG/RAW; convert copies to WebP for the web.
Need to go the other direction? The WebP to JPG converter handles it in one click.
Lossy vs lossless WebP
WebP comes in two modes, and the distinction matters. Lossy WebP is the JPG replacement: smaller files, tiny quality cost, ideal for photos. Lossless WebP is the PNG replacement: pixel-perfect, typically 25–30% smaller than PNG, and it keeps transparency. Many people try only one mode and conclude WebP is not for them — make sure you are comparing the right mode against the format you are replacing.
Animated WebP vs GIF
If you still use GIFs for short animations, WebP is a major upgrade: an animated WebP is usually 60–90% smaller than the same animation as a GIF, with better color (GIF is limited to 256 colors) and optional transparency. The only reason GIF survives is universal support — every chat app and ancient browser plays GIFs, while WebP animation needs a reasonably modern client.
A 10-second test you can run
Take any JPG from your phone, run it through the JPG to WebP converter, and compare the two files side by side at full zoom. Then do the same with a PNG logo through the PNG to WebP converter. Roughly nine out of ten people cannot spot the difference — but everyone notices the smaller file size. That quick experiment tells you more than any article can.
The practical workflow
- Keep your original photo as JPG (or RAW from the camera).
- For your website or app, export/convert a WebP copy — smaller and faster.
- For email, print, or sharing, send the JPG.
- Two formats, zero headaches.